X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fstaging%2Fflorian.git;a=blobdiff_plain;f=package%2Fnvram%2Fsrc%2Fnvram.c;fp=package%2Fnvram%2Fsrc%2Fnvram.c;h=0000000000000000000000000000000000000000;hp=a0bc006d15322540978f6496c98f8c360ab7d0dd;hb=483dfb483e12e660267721a99bf97c572cb72795;hpb=ab1287beadc3396709bef189459bb5a3059bb6be

diff --git a/package/nvram/src/nvram.c b/package/nvram/src/nvram.c
deleted file mode 100644
index a0bc006d15..0000000000
--- a/package/nvram/src/nvram.c
+++ /dev/null
@@ -1,556 +0,0 @@
-/*
- * NVRAM variable manipulation (common)
- *
- * Copyright 2004, Broadcom Corporation
- * Copyright 2009-2010, OpenWrt.org
- * All Rights Reserved.
- *
- * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
- * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
- * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
- *
- */
-
-#include "nvram.h"
-
-#define TRACE(msg) \
-	printf("%s(%i) in %s(): %s\n", \
-		__FILE__, __LINE__, __FUNCTION__, msg ? msg : "?")
-
-size_t nvram_erase_size = 0;
-
-
-/*
- * -- Helper functions --
- */
-
-/* String hash */
-static uint32_t hash(const char *s)
-{
-	uint32_t hash = 0;
-
-	while (*s)
-		hash = 31 * hash + *s++;
-
-	return hash;
-}
-
-/* Free all tuples. */
-static void _nvram_free(nvram_handle_t *h)
-{
-	uint32_t i;
-	nvram_tuple_t *t, *next;
-
-	/* Free hash table */
-	for (i = 0; i < NVRAM_ARRAYSIZE(h->nvram_hash); i++) {
-		for (t = h->nvram_hash[i]; t; t = next) {
-			next = t->next;
-			free(t);
-		}
-		h->nvram_hash[i] = NULL;
-	}
-
-	/* Free dead table */
-	for (t = h->nvram_dead; t; t = next) {
-		next = t->next;
-		free(t);
-	}
-
-	h->nvram_dead = NULL;
-}
-
-/* (Re)allocate NVRAM tuples. */
-static nvram_tuple_t * _nvram_realloc( nvram_handle_t *h, nvram_tuple_t *t,
-	const char *name, const char *value )
-{
-	if ((strlen(value) + 1) > NVRAM_SPACE)
-		return NULL;
-
-	if (!t) {
-		if (!(t = malloc(sizeof(nvram_tuple_t) + strlen(name) + 1)))
-			return NULL;
-
-		/* Copy name */
-		t->name = (char *) &t[1];
-		strcpy(t->name, name);
-
-		t->value = NULL;
-	}
-
-	/* Copy value */
-	if (!t->value || strcmp(t->value, value))
-	{
-		if(!(t->value = (char *) realloc(t->value, strlen(value)+1)))
-			return NULL;
-
-		strcpy(t->value, value);
-		t->value[strlen(value)] = '\0';
-	}
-
-	return t;
-}
-
-/* (Re)initialize the hash table. */
-static int _nvram_rehash(nvram_handle_t *h)
-{
-	nvram_header_t *header = nvram_header(h);
-	char buf[] = "0xXXXXXXXX", *name, *value, *eq;
-
-	/* (Re)initialize hash table */
-	_nvram_free(h);
-
-	/* Parse and set "name=value\0 ... \0\0" */
-	name = (char *) &header[1];
-
-	for (; *name; name = value + strlen(value) + 1) {
-		if (!(eq = strchr(name, '=')))
-			break;
-		*eq = '\0';
-		value = eq + 1;
-		nvram_set(h, name, value);
-		*eq = '=';
-	}
-
-	/* Set special SDRAM parameters */
-	if (!nvram_get(h, "sdram_init")) {
-		sprintf(buf, "0x%04X", (uint16_t)(header->crc_ver_init >> 16));
-		nvram_set(h, "sdram_init", buf);
-	}
-	if (!nvram_get(h, "sdram_config")) {
-		sprintf(buf, "0x%04X", (uint16_t)(header->config_refresh & 0xffff));
-		nvram_set(h, "sdram_config", buf);
-	}
-	if (!nvram_get(h, "sdram_refresh")) {
-		sprintf(buf, "0x%04X",
-			(uint16_t)((header->config_refresh >> 16) & 0xffff));
-		nvram_set(h, "sdram_refresh", buf);
-	}
-	if (!nvram_get(h, "sdram_ncdl")) {
-		sprintf(buf, "0x%08X", header->config_ncdl);
-		nvram_set(h, "sdram_ncdl", buf);
-	}
-
-	return 0;
-}
-
-
-/*
- * -- Public functions --
- */
-
-/* Get nvram header. */
-nvram_header_t * nvram_header(nvram_handle_t *h)
-{
-	return (nvram_header_t *) &h->mmap[h->offset];
-}
-
-/* Get the value of an NVRAM variable. */
-char * nvram_get(nvram_handle_t *h, const char *name)
-{
-	uint32_t i;
-	nvram_tuple_t *t;
-	char *value;
-
-	if (!name)
-		return NULL;
-
-	/* Hash the name */
-	i = hash(name) % NVRAM_ARRAYSIZE(h->nvram_hash);
-
-	/* Find the associated tuple in the hash table */
-	for (t = h->nvram_hash[i]; t && strcmp(t->name, name); t = t->next);
-
-	value = t ? t->value : NULL;
-
-	return value;
-}
-
-/* Set the value of an NVRAM variable. */
-int nvram_set(nvram_handle_t *h, const char *name, const char *value)
-{
-	uint32_t i;
-	nvram_tuple_t *t, *u, **prev;
-
-	/* Hash the name */
-	i = hash(name) % NVRAM_ARRAYSIZE(h->nvram_hash);
-
-	/* Find the associated tuple in the hash table */
-	for (prev = &h->nvram_hash[i], t = *prev;
-		 t && strcmp(t->name, name); prev = &t->next, t = *prev);
-
-	/* (Re)allocate tuple */
-	if (!(u = _nvram_realloc(h, t, name, value)))
-		return -12; /* -ENOMEM */
-
-	/* Value reallocated */
-	if (t && t == u)
-		return 0;
-
-	/* Move old tuple to the dead table */
-	if (t) {
-		*prev = t->next;
-		t->next = h->nvram_dead;
-		h->nvram_dead = t;
-	}
-
-	/* Add new tuple to the hash table */
-	u->next = h->nvram_hash[i];
-	h->nvram_hash[i] = u;
-
-	return 0;
-}
-
-/* Unset the value of an NVRAM variable. */
-int nvram_unset(nvram_handle_t *h, const char *name)
-{
-	uint32_t i;
-	nvram_tuple_t *t, **prev;
-
-	if (!name)
-		return 0;
-
-	/* Hash the name */
-	i = hash(name) % NVRAM_ARRAYSIZE(h->nvram_hash);
-
-	/* Find the associated tuple in the hash table */
-	for (prev = &h->nvram_hash[i], t = *prev;
-		 t && strcmp(t->name, name); prev = &t->next, t = *prev);
-
-	/* Move it to the dead table */
-	if (t) {
-		*prev = t->next;
-		t->next = h->nvram_dead;
-		h->nvram_dead = t;
-	}
-
-	return 0;
-}
-
-/* Get all NVRAM variables. */
-nvram_tuple_t * nvram_getall(nvram_handle_t *h)
-{
-	int i;
-	nvram_tuple_t *t, *l, *x;
-
-	l = NULL;
-
-	for (i = 0; i < NVRAM_ARRAYSIZE(h->nvram_hash); i++) {
-		for (t = h->nvram_hash[i]; t; t = t->next) {
-			if( (x = (nvram_tuple_t *) malloc(sizeof(nvram_tuple_t))) != NULL )
-			{
-				x->name  = t->name;
-				x->value = t->value;
-				x->next  = l;
-				l = x;
-			}
-			else
-			{
-				break;
-			}
-		}
-	}
-
-	return l;
-}
-
-/* Regenerate NVRAM. */
-int nvram_commit(nvram_handle_t *h)
-{
-	nvram_header_t *header = nvram_header(h);
-	char *init, *config, *refresh, *ncdl;
-	char *ptr, *end;
-	int i;
-	nvram_tuple_t *t;
-	nvram_header_t tmp;
-	uint8_t crc;
-
-	/* Regenerate header */
-	header->magic = NVRAM_MAGIC;
-	header->crc_ver_init = (NVRAM_VERSION << 8);
-	if (!(init = nvram_get(h, "sdram_init")) ||
-		!(config = nvram_get(h, "sdram_config")) ||
-		!(refresh = nvram_get(h, "sdram_refresh")) ||
-		!(ncdl = nvram_get(h, "sdram_ncdl"))) {
-		header->crc_ver_init |= SDRAM_INIT << 16;
-		header->config_refresh = SDRAM_CONFIG;
-		header->config_refresh |= SDRAM_REFRESH << 16;
-		header->config_ncdl = 0;
-	} else {
-		header->crc_ver_init |= (strtoul(init, NULL, 0) & 0xffff) << 16;
-		header->config_refresh = strtoul(config, NULL, 0) & 0xffff;
-		header->config_refresh |= (strtoul(refresh, NULL, 0) & 0xffff) << 16;
-		header->config_ncdl = strtoul(ncdl, NULL, 0);
-	}
-
-	/* Clear data area */
-	ptr = (char *) header + sizeof(nvram_header_t);
-	memset(ptr, 0xFF, NVRAM_SPACE - sizeof(nvram_header_t));
-	memset(&tmp, 0, sizeof(nvram_header_t));
-
-	/* Leave space for a double NUL at the end */
-	end = (char *) header + NVRAM_SPACE - 2;
-
-	/* Write out all tuples */
-	for (i = 0; i < NVRAM_ARRAYSIZE(h->nvram_hash); i++) {
-		for (t = h->nvram_hash[i]; t; t = t->next) {
-			if ((ptr + strlen(t->name) + 1 + strlen(t->value) + 1) > end)
-				break;
-			ptr += sprintf(ptr, "%s=%s", t->name, t->value) + 1;
-		}
-	}
-
-	/* End with a double NULL and pad to 4 bytes */
-	*ptr = '\0';
-	ptr++;
-
-	if( (int)ptr % 4 )
-		memset(ptr, 0, 4 - ((int)ptr % 4));
-
-	ptr++;
-
-	/* Set new length */
-	header->len = NVRAM_ROUNDUP(ptr - (char *) header, 4);
-
-	/* Little-endian CRC8 over the last 11 bytes of the header */
-	tmp.crc_ver_init   = header->crc_ver_init;
-	tmp.config_refresh = header->config_refresh;
-	tmp.config_ncdl    = header->config_ncdl;
-	crc = hndcrc8((unsigned char *) &tmp + NVRAM_CRC_START_POSITION,
-		sizeof(nvram_header_t) - NVRAM_CRC_START_POSITION, 0xff);
-
-	/* Continue CRC8 over data bytes */
-	crc = hndcrc8((unsigned char *) &header[0] + sizeof(nvram_header_t),
-		header->len - sizeof(nvram_header_t), crc);
-
-	/* Set new CRC8 */
-	header->crc_ver_init |= crc;
-
-	/* Write out */
-	msync(h->mmap, h->length, MS_SYNC);
-	fsync(h->fd);
-
-	/* Reinitialize hash table */
-	return _nvram_rehash(h);
-}
-
-/* Open NVRAM and obtain a handle. */
-nvram_handle_t * nvram_open(const char *file, int rdonly)
-{
-	int i;
-	int fd;
-	char *mtd = NULL;
-	nvram_handle_t *h;
-	nvram_header_t *header;
-	int offset = -1;
-
-	/* If erase size or file are undefined then try to define them */
-	if( (nvram_erase_size == 0) || (file == NULL) )
-	{
-		/* Finding the mtd will set the appropriate erase size */
-		if( (mtd = nvram_find_mtd()) == NULL || nvram_erase_size == 0 )
-		{
-			free(mtd);
-			return NULL;
-		}
-	}
-
-	if( (fd = open(file ? file : mtd, O_RDWR)) > -1 )
-	{
-		char *mmap_area = (char *) mmap(
-			NULL, nvram_erase_size, PROT_READ | PROT_WRITE,
-			(( rdonly == NVRAM_RO ) ? MAP_PRIVATE : MAP_SHARED) | MAP_LOCKED, fd, 0);
-
-		if( mmap_area != MAP_FAILED )
-		{
-			for( i = 0; i <= ((nvram_erase_size - NVRAM_SPACE) / sizeof(uint32_t)); i++ )
-			{
-				if( ((uint32_t *)mmap_area)[i] == NVRAM_MAGIC )
-				{
-					offset = i * sizeof(uint32_t);
-					break;
-				}
-			}
-
-			if( offset < 0 )
-			{
-				free(mtd);
-				return NULL;
-			}
-			else if( (h = malloc(sizeof(nvram_handle_t))) != NULL )
-			{
-				memset(h, 0, sizeof(nvram_handle_t));
-
-				h->fd     = fd;
-				h->mmap   = mmap_area;
-				h->length = nvram_erase_size;
-				h->offset = offset;
-
-				header = nvram_header(h);
-
-				if( header->magic == NVRAM_MAGIC )
-				{
-					_nvram_rehash(h);
-					free(mtd);
-					return h;
-				}
-				else
-				{
-					munmap(h->mmap, h->length);
-					free(h);
-				}
-			}
-		}
-	}
-
-	free(mtd);
-	return NULL;
-}
-
-/* Close NVRAM and free memory. */
-int nvram_close(nvram_handle_t *h)
-{
-	_nvram_free(h);
-	munmap(h->mmap, h->length);
-	close(h->fd);
-	free(h);
-
-	return 0;
-}
-
-/* Determine NVRAM device node. */
-char * nvram_find_mtd(void)
-{
-	FILE *fp;
-	int i, esz;
-	char dev[PATH_MAX];
-	char *path = NULL;
-	struct stat s;
-	int supported = 1;
-
-	/* Refuse any operation on the WGT634U */
-	if( (fp = fopen("/proc/diag/model", "r")) )
-	{
-		if( fgets(dev, sizeof(dev), fp) && !strncmp(dev, "Netgear WGT634U", 15) )
-			supported = 0;
-
-		fclose(fp);
-	}
-
-	if( supported && (fp = fopen("/proc/mtd", "r")) )
-	{
-		while( fgets(dev, sizeof(dev), fp) )
-		{
-			if( strstr(dev, "nvram") && sscanf(dev, "mtd%d: %08x", &i, &esz) )
-			{
-				nvram_erase_size = esz;
-
-				sprintf(dev, "/dev/mtdblock/%d", i);
-				if( stat(dev, &s) > -1 && (s.st_mode & S_IFBLK) )
-				{
-					if( (path = (char *) malloc(strlen(dev)+1)) != NULL )
-					{
-						strncpy(path, dev, strlen(dev)+1);
-						break;
-					}
-				}
-				else
-				{
-					sprintf(dev, "/dev/mtdblock%d", i);
-					if( stat(dev, &s) > -1 && (s.st_mode & S_IFBLK) )
-					{
-						if( (path = (char *) malloc(strlen(dev)+1)) != NULL )
-						{
-							strncpy(path, dev, strlen(dev)+1);
-							break;
-						}
-					}
-				}
-			}
-		}
-		fclose(fp);
-	}
-
-	return path;
-}
-
-/* Check NVRAM staging file. */
-char * nvram_find_staging(void)
-{
-	struct stat s;
-
-	if( (stat(NVRAM_STAGING, &s) > -1) && (s.st_mode & S_IFREG) )
-	{
-		return NVRAM_STAGING;
-	}
-
-	return NULL;
-}
-
-/* Copy NVRAM contents to staging file. */
-int nvram_to_staging(void)
-{
-	int fdmtd, fdstg, stat;
-	char *mtd = nvram_find_mtd();
-	char buf[nvram_erase_size];
-
-	stat = -1;
-
-	if( (mtd != NULL) && (nvram_erase_size > 0) )
-	{
-		if( (fdmtd = open(mtd, O_RDONLY)) > -1 )
-		{
-			if( read(fdmtd, buf, sizeof(buf)) == sizeof(buf) )
-			{
-				if((fdstg = open(NVRAM_STAGING, O_WRONLY | O_CREAT, 0600)) > -1)
-				{
-					write(fdstg, buf, sizeof(buf));
-					fsync(fdstg);
-					close(fdstg);
-
-					stat = 0;
-				}
-			}
-
-			close(fdmtd);
-		}
-	}
-
-	free(mtd);
-	return stat;
-}
-
-/* Copy staging file to NVRAM device. */
-int staging_to_nvram(void)
-{
-	int fdmtd, fdstg, stat;
-	char *mtd = nvram_find_mtd();
-	char buf[nvram_erase_size];
-
-	stat = -1;
-
-	if( (mtd != NULL) && (nvram_erase_size > 0) )
-	{
-		if( (fdstg = open(NVRAM_STAGING, O_RDONLY)) > -1 )
-		{
-			if( read(fdstg, buf, sizeof(buf)) == sizeof(buf) )
-			{
-				if( (fdmtd = open(mtd, O_WRONLY | O_SYNC)) > -1 )
-				{
-					write(fdmtd, buf, sizeof(buf));
-					fsync(fdmtd);
-					close(fdmtd);
-					stat = 0;
-				}
-			}
-
-			close(fdstg);
-
-			if( !stat )
-				stat = unlink(NVRAM_STAGING) ? 1 : 0;
-		}
-	}
-
-	free(mtd);
-	return stat;
-}